Question

In: Chemistry

Consider the galvanic cell described by (N and M are metals): N(s)|N2+(aq)||M+(aq)|M(s) If Eocathode = 0.182...

Consider the galvanic cell described by (N and M are metals):

N(s)|N2+(aq)||M+(aq)|M(s)

If Eocathode = 0.182 V and Eoanode = 1.411 V, and [N2+(aq)] = 0.931 M and [M+(aq)] = 0.655 M, what is Ecell, using the Nernst equation? ____ V

(the answer is supposed to be 1.233 but I don't understand how)

Solutions

Expert Solution

Assumption: The temperature is considered to be 25 degrees C (298 K).

Footnote: For the cell to be feasible, E0cell > 0, which is not the case here. I have shown the procedure of calculating the cell potential assuming all the values provided in the question are accurate (including positive or negative signs).


Related Solutions

The voltage generated by the zinc concentration cell described by, Zn(s)|Zn2 (aq, 0.100 M)||Zn2 (aq, ?...
The voltage generated by the zinc concentration cell described by, Zn(s)|Zn2 (aq, 0.100 M)||Zn2 (aq, ? M)|Zn(s) is 26.0 mV at 25 °C. Calculate the concentration of the Zn2 (aq) ion at the cathode.
A galvanic cell Fe(s)|Fe2+(aq) || Pb2+(aq)|Pb(s) is constructed using a completely immersed Fe electrode that weighs...
A galvanic cell Fe(s)|Fe2+(aq) || Pb2+(aq)|Pb(s) is constructed using a completely immersed Fe electrode that weighs 35.6 g and a Pbelectrode immersed in 510 mL of 1.00 M Pb2+(aq) solution. A steady current of 0.0672 A is drawn from the cell as the electrons move from the Fe electrode to the Pb electrode. (a) Which reactant is the limiting reactant in this cell? Enter symbol (b) How long does it take for the cell to be completely discharged? -------- s...
For the voltaic cell, Cr(s) │ Cr3+ (aq, 0.24 M) ││ Fe2+ (aq, (?) M) │...
For the voltaic cell, Cr(s) │ Cr3+ (aq, 0.24 M) ││ Fe2+ (aq, (?) M) │ Fe(s) , Ecell is 0.33 V. Calculate the concentration of Fe2+ (M). Reduction potential for Cr3+(aq)/Cr(s) is -0.74 V, Fe2+(aq)/Fe(s) is -0.44 V. Enter number to 2 decimal places.
Calculate E at 25° C for a galvanic cell based on the reaction: Zn(s) + Cu2+(aq)→Zn...
Calculate E at 25° C for a galvanic cell based on the reaction: Zn(s) + Cu2+(aq)→Zn 2+(aq) + Cu (s)    in which [Zn2+]=0.55M and [Cu2+]=1.02M
For the following electrochemical cell        Cu(s)|Cu^2+ (aq, 0.0155 M)||Ag^+ (aq, 3.50 M)|Ag(s) write the net cell...
For the following electrochemical cell        Cu(s)|Cu^2+ (aq, 0.0155 M)||Ag^+ (aq, 3.50 M)|Ag(s) write the net cell equation. Phases are optional. Do not include the concentrations. Calculate the following values at 25.0 °C using standard potentials as needed. Eocell delta Go reaction Ecell delta G reaction
Suppose you construct the following galvanic cell: Fe(s)|Fe2+(aq)||NAD+(aq)|NADH(aq) Fe2+ + 2e- → Fe Eo = -0.44V...
Suppose you construct the following galvanic cell: Fe(s)|Fe2+(aq)||NAD+(aq)|NADH(aq) Fe2+ + 2e- → Fe Eo = -0.44V NAD+ + 2e- + 2H+ → NADH + H+ Eo' = -0.320V (note the different standard states) A) Will the cell generate current at biochemical standard state? At chemical standard state? At T = 4 oC, pH = 7? At T = 97 oC, pH = 7? Justify your answers. B) How many protons can be moved across a membrane from pH 7.5 to...
(a) The cell of interest in this figure is: Cu(s) | CuSO4(aq, 1.0 M) | KCl(aq,...
(a) The cell of interest in this figure is: Cu(s) | CuSO4(aq, 1.0 M) | KCl(aq, 3 M) | AgCl(s) | Ag(s) Write reduction half-reactions for this cell. (Omit states-of-matter from your answer.)
Consider the Daniell cell, for which the overall cell reaction is Zn(s)+Cu2+(aq)⇌Zn2+(aq)+Cu(s) The concentrations of CuSO4...
Consider the Daniell cell, for which the overall cell reaction is Zn(s)+Cu2+(aq)⇌Zn2+(aq)+Cu(s) The concentrations of CuSO4 and ZnSO4 are 2.20×10−3 m and 1.10×10−3 m , respectively. A) Calculate E setting the activities of the ionic species equal to their molalities. Express your answer to four significant figures and include the appropriate units. B) Calculate γ±,ZnSO4 for the half-cell solutions using the Debye-Huckel limiting law. Express your answer using three significant figures. C) Calculate γ±,CuSO4 for the half-cell solutions using the...
Comprehensive thermochemical problem: Consider an electrochemical cell with the following half- cells: Pb2+(aq)(0.01 M)/Pb(s) and Sn2+(aq)(2M)/Sn(s)...
Comprehensive thermochemical problem: Consider an electrochemical cell with the following half- cells: Pb2+(aq)(0.01 M)/Pb(s) and Sn2+(aq)(2M)/Sn(s) at 25 °C. a. Find the potential of the cell. b.Determine the oxidizing agent and reducing agent. c. Calculate the standard free energy change for the reaction. d. Find the free energy change for the cell under the current conditions. e. Determine the equilibrium concentrations of the solutions. f. Use ΔH°f data to determine ΔH°rxn. ΔH°f (Sn2+ (aq)) = -8.8 kJ/mol ΔH°f (Pb2+ (aq))...
A galvanic cell has the following composition: Pt(s) l Sn4+ (1 M), Sn2+ (1 M) ll...
A galvanic cell has the following composition: Pt(s) l Sn4+ (1 M), Sn2+ (1 M) ll Cu2+ (1 M) l Cu(s) From the shorthand notation, draw the galvanic cell. Label the anode and cathode and indicate which species are in the aqueous phase and which are solids (the electrodes). Under each beaker, write the appropriate half-rxn.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT